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Type: Artigo de periódico
Title: Mössbauer Parameters And Structure Correlations In Five-coordinate Iron Complexes
Author: Dias G.H.M.
Morigaki M.K.
Abstract: Iron-57 Mössbauer spectroscopy data are reported for [Fe(ButNC)5], [Fe(CO)4 (ButNC)] and [(PPh3)2N][Fe(CO)4(CN)] complexes in order to examine the bonding character and geometrical changes of several iron penta-coordinate complexes. The small quadrupole splitting value of 0.88 mm s-1 measured for the distorted trigonal bipyramidal [Fe(ButNC)5] differs significantly from these found for regular geometries. As a consequence of this unusual result, a new correlation method of analysis was proposed for 13 known structures of five-coodinate [FeL5], axially substituted [Fe(CO)4L′] and [{Fe(CO)4}nL″]n- complexes (L = CO or ButNC), on the basis of deviations from the idealized trigonal bipyramidal structure and changes in the quadrupole splittings. Furthermore, correlations involving Mössbauer data and IR carbonyl stretching frequencies were used to answer more detailed electronic and stereochemical questions. © 1992.
Citation: Polyhedron. , v. 11, n. 13, p. 1629 - 1636, 1992.
Rights: fechado
Identifier DOI: 10.1016/S0277-5387(00)83717-1
Date Issue: 1992
Appears in Collections:Unicamp - Artigos e Outros Documentos

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